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	Analysis and numerical simulations of the teleconnection between indian summer monsoon and precipitation in north china
	Liu Yunyun1,2,3; Ding Yihui2
刊名	Acta meteorologica sinica
	2008
卷号	22期号:4页码:489-501
关键词	Indian summer monsoon Summer precipitation North china Teleconnection Regional climate model of the national climate center (regcm_ncc)
ISSN号	0894-0525
通讯作者	Liu yunyun(liuyuny@cma.gov.cn)
英文摘要	In the early 1980s, chinese meteorologists discovered the positive correlation in summer rainfall between india and north china and the correlation was later confirmed by some researches in and outside china. based on a variety of meteorological data from 1951 to 2005 and numerical simulations, the present study investigates such a correlation between indian summer monsoon (ism) and precipitation in north china. furthermore, we discuss the intrinsic relations of the positive (northwest india)-negative (the tibetan plateau)-positive (north china) precipitation anomaly teleconnection pattern from two aspects of thermal and dynamical factors, which not only confirms the precipitation teleconnection previously discovered again, but also reveals the influence mechanism of the ism on the rainfall in north china. the results show that: (1) when the ism is strong (weak), the precipitation in north china tends to be more (less) than normal; however, when the rainfall in north china is more (less) than normal, the probability of the strengthening (weakening) of the ism is relatively lower. this implies that the ism anomaly has more impact oil the rainfall in north china. (2) the indian low usually dominantly impacts the intensity of the ism. when the indian low deepens, the low troughs in mid-high latitudes are frequently strengthened, and the ridge of the western pacific subtropical high (wpsh) extends westward. the southwesterly water vapor transport originated from low-latitudes and the southeasterly water vapor transport along the southwestern flank of the wpsh converge in north china, which is favorable for more rainfall there than normal, and vice versa. (3) the simulations from the regional climate model developed by national climate center (regcm-ncc) capture the salient feature of the precipitation teleconnection between india and north china. the simulated anomalous atmospheric circulations are close to observations, which confirms the existence of such a teleconnection from another angle.
WOS关键词	REGIONAL CLIMATE MODEL ; EAST-ASIA ; SOUTH
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000262417000008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2387992
专题	中国科学院大学
通讯作者	Liu Yunyun
作者单位	1.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Natl Climate Ctr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Liu Yunyun,Ding Yihui. Analysis and numerical simulations of the teleconnection between indian summer monsoon and precipitation in north china[J]. Acta meteorologica sinica,2008,22(4):489-501.
APA	Liu Yunyun,&Ding Yihui.(2008).Analysis and numerical simulations of the teleconnection between indian summer monsoon and precipitation in north china.Acta meteorologica sinica,22(4),489-501.
MLA	Liu Yunyun,et al."Analysis and numerical simulations of the teleconnection between indian summer monsoon and precipitation in north china".Acta meteorologica sinica 22.4(2008):489-501.

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